<template>
  <div>
    <!-- 面包屑导航区-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <!-- 提示区域 -->
      <el-alert
        title="添加商品信息"
        type="info"
        center
        show-icon
        :closable="false"
      >
      </el-alert>
      <!-- 步骤条区域 -->
      <el-steps
        :space="200"
        :active="activeIndex - 0"
        finish-status="success"
        align-center
      >
        <el-step title="基本信息"></el-step>
        <!-- <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step> -->
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <!-- tab栏区域 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
        label-position="top"
      >
        <el-tabs
          v-model="activeIndex"
          :tab-position="'left'"
          :before-leave="beforeTabLeave"
          @tab-click="tabClicked"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <!-- <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader
                expand-trigger="hover"
                v-model="addForm.goods_cat"
                :options="catelist"
                :props="cateProps"
                @change="handleChanged"
                clearable
              ></el-cascader>
            </el-form-item> -->
          </el-tab-pane>
          <!-- <el-tab-pane label="商品参数" name="1">
            <el-form-item
              v-for="item in manyTableData"
              :key="item.attr_id"
              :label="item.attr_name"
            >
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  :label="cb"
                  v-for="(cb, i) in item.attr_vals"
                  :key="i"
                  border
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane> -->
          <!-- <el-tab-pane label="商品属性" name="2">
            <el-form-item :label="item.attr_name" v-for="item in onlyTableData" :key="item.attr_id">
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane> -->
          <el-tab-pane label="商品图片" name="1">
            <!-- action: 图片上传的API接口地址 -->
            <el-upload
              :action="uploadURL"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              :headers="headerObj"
              list-type="picture"
              :on-success="handleSuccess"
            >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="2">
             <!-- 富文本编辑器 -->
            <quill-editor v-model="addForm.goods_introduce"></quill-editor>
            <!-- 添加商品 -->
            <el-button type="primary" class="btnAdd" @click="addGoods">添加商品</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
    <!-- 图片预览对话框 -->
    <el-dialog title="图片预览" :visible.sync="previewDialogVisible" width="50%">
      <img :src="picPreviewPath" alt="" class="previewImg">
    </el-dialog>
  </div>
</template>
<script>
import _ from 'lodash'
export default {
  data() {
    return {
      activeIndex: '0',
      addForm: {
        goods_name: '',
        goods_price: 100,
        goods_number: 1,
        goods_weight: 10,
        // 商品所属的分类列表
        goods_cat: [1543,1545,1547],
         // 图片的数组
        pics: [],
        // 商品详细信息
        goods_introduce:'',
        attrs:[], 
      },
      addFormRules: {
        goods_name: [
          { required: true, message: '请输入商品名称', trigger: 'blur' }
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' }
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' }
        ],
        goods_weight: [
          { required: true, message: '请输入商品数量', trigger: 'blur' }
        ]
      },
      // 商品分类列表
      catelist: [],
      cateProps: {
        label: 'cat_name' /* 看到的 */,
        value: 'cat_id' /* 选定的 */,
        children: 'children'
      },
      // 动态参数列表数组
      manyTableData: [],
      // 静态属性参数列表
      onlyTableData:[],
      // 图片上传地址
      // uploadURL: 'http://10.1.2.85:8889/api/private/v1/upload',
      uploadURL: 'http://120.55.71.4:8889/api/private/v1/upload',
      // 图片上传组件的请求对象
      headerObj: {
        Authorization: window.sessionStorage.getItem('token')
      },
      picPreviewPath: '',
      // 图片预览对话框
      previewDialogVisible: false,

    }
  },
  created() {
    this.getCateList()
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get('categories')
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品列表失败')
      }
      this.catelist = res.data
      console.log(this.catelist)
    },
    // 级联选择器发生变化，触发该函数
    handleChanged() {
      // 证明选中的不是三级分类
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = []
        return
      } // 证明选中的是三级分类
      console.log(this.addForm.goods_cat)
    },
    beforeTabLeave(activeName, odlActiveName) {
      // 未选中商品分类阻止Tab标签跳转
      // if (odlActiveName === '0' && this.addForm.goods_cat.length !== 3) {
      //   this.$message.error('请先选择商品分类')
      //   return false
      // }
    },
    async tabClicked() {
      // 证明访问动态参数面板
      // if (this.activeIndex === '1') {
      //   const { data: res } = await this.$http.get(
      //     `categories/${this.getCateId}/attributes`,
      //     {
      //       params: { sel: 'many' }
      //     }
      //   )
      //   if (res.meta.status !== 200) {
      //     return this.$message.error('获取动态参数列表失败！')
      //   }
      //   console.log(res.data)
      //   // 首先将字符串转为数组 
      //   res.data.forEach(item => {
      //     item.attr_vals =
      //       item.attr_vals.length === 0 ? [] : item.attr_vals.split(' ')
      //   })
      //   this.manyTableData = res.data
      // }
      // 证明访问商品静态属性面板
      // if (this.activeIndex === '2') {
      //   const { data: res } = await this.$http.get(
      //     `categories/${this.getCateId}/attributes`,
      //     {
      //       params: { sel: 'only' }
      //     }
      //   )
      //   if (res.meta.status !== 200) {
      //     return this.$message.error('获取动态参数列表失败！')
      //   }
      //   console.log(res.data)
        
      //   this.onlyTableData = res.data
      // }
    },
    // 处理图片预览
    handlePreview (file) {
      this.picPreviewPath = file.response.data.url
      this.previewDialogVisible = true
    },
    // 处理移除图片的操作
    handleRemove (file) {
      // 1.获取将要删除图片的临时路径
      const filePath = file.response.data.tmp_path
      // 2.从pics数组中，找到图片对应的索引值
      const i = this.addForm.pics.findIndex(x => x.pic === filePath)
      // 3.调用splice方法，移除图片信息
      this.addForm.pics.splice(i,1)
    },
    // 监听图片上传成功事件
    handleSuccess (response) {
      console.log(response)
      // 1.拼接得到一个图片信息对象 临时路径
      const picInfo = { pic: response.data.tmp_path }
      // 2.将图片信息对象，push到pics数组中
      this.addForm.pics.push(picInfo)
      console.log(this.addForm)
    },
    addGoods () {
      this.$refs.addFormRef.validate(async valid => {                  /* 预校验 */
        if (!valid) return this.$message.error('请填写必要的表单项！')
        // 发送请求前：需对提交的表单进行处理goods_cat attrs
        // this.addForm.goods_cat = this.addForm.goods_cat.join(',')
        // 以上写法不对：级联选择器绑定的对象goods_cat要求是数组对象
        // 解决办法: 包：lodash 方法（深拷贝）：cloneDeep(boj)

        // 将this.addForm进行深拷贝
        const form = _.cloneDeep(this.addForm)
        form.goods_cat = form.goods_cat.join(',')
        // 处理动态参数
        this.manyTableData.forEach(item => {
          const newInfo = {
            attr_id:item.attr_id,
            attr_value:item.attr_vals.join(' ')                      /* 数组转为字符串 */
          }
          this.addForm.attrs.push(newInfo)
        })
        // 处理静态属性
        this.onlyTableData.forEach(item => {
          const newInfo = {
            attr_id:item.attr_id,
            attr_value:item.attr_vals
          }
          this.addForm.attrs.push(newInfo)
        })
        form.attrs = this.addForm.attrs
        form.business_id = localStorage.getItem("business_id");
        console.log(form)
        // 发起请求添加商品
        // 商品名称必须是唯一的
        const{data:res}=await this.$http.post('goods',form)
        if(res.meta.status!==201) return this.$message.error('添加商品失败')
        this.$message.success('添加商品成功!')
        this.$router.push('/goods')
      })
    },

  },
  computed: {
    getCateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2]
      }
      return null
    }
  }
}
</script>
<style lang="less" scoped>
.el-checkbox{
  margin:0 10px 0 0 !important;
}
.previewImg{
  width: 100%;
}
.btnAdd{
  margin-top: 15px
}
</style>
